Help sourcing specialist bolts for solar panel attachment to roof tracks

[Bmonck]

Hi all
I want to attach two solar panels to my roof. Idea is to attach the panels to two aluminium cross bars. Then I need to attach the aluminium cross bars to the airline or logisitics tracks that run down either side of the roof.
So I have found these bolts that attach to the airline/logistics tracks in Europe. See the photos below. They come in various lengths. But I can’t find a supplier in the UK. They need to be good quality to “lock” properly to the tracks.
Can anyone recommend a UK supplier ?
many thanks

 

[Dave_S]

Not sure if it helps, but Campervan Culture do stock this sort of thing:

Four Load Rings & Single Anchor Point Fitting Kit - Campervan Culture - [Leaving Land Cruiser Club]

... so maybe able to help with finding/sourcing suitable fixings?

 

[Jacob100]

Brosco.com in Loughborough - all weird and wonderful automotive nuts and bolts and old-school service.

 

[Bmonck]

Thanks @DaveS have emailed
thanks @Jacob have emailed bresco too

 

[AndyCook]

These any use

Butterfly Clip Mounting 1 x fits Unwin Tracking New | eBay - [Leaving Land Cruiser Club]

or
Cargo Track Accessory Screw Fitting with M8 Nut - 4x4overlander - [Leaving Land Cruiser Club]

 

[kolly]

You can try asking a question here - Electrical Equipment buy now ⋆ Gaelix Marine Service - [Leaving Land Cruiser Club]. The site does not seem to have such kits, but they definitely put panels on boats and know which ones are best to use.

 

[Bat21]

These any use

Butterfly Clip Mounting 1 x fits Unwin Tracking New | eBay - [Leaving Land Cruiser Club]

or
Cargo Track Accessory Screw Fitting with M8 Nut - 4x4overlander - [Leaving Land Cruiser Club]

These are what you are looking for ^^^^ @Bmonck

 

[Bmonck]

These any use

Butterfly Clip Mounting 1 x fits Unwin Tracking New | eBay - [Leaving Land Cruiser Club]

or
Cargo Track Accessory Screw Fitting with M8 Nut - 4x4overlander - [Leaving Land Cruiser Club]

Brilliant Andy. Many thanks.